package com.rd.student.jiaji.class4.suyan.zrrd.day30_0801;

public class Test {
    public static void main(String[] args) {
        //判断是否是数字
        char c='A';
        //A=65,a=97
        Character.isDigit(c);
        //判断是否为字符
        Character.isLetter(c);
        int[] arr=new int[]{2,34,24,1,45,1,41,};
        for (int i=0,max=0;i<arr.length;i++){
            if (arr[max]<arr[i]){
                arr[max]=arr[i];
            }
        }

    }
}
